import { Extension } from '@tiptap/core';
/** As much of a `DataTransfer` as the paste reads. */
export interface ClipboardSource {
    files?: ArrayLike<File> | null;
    getData(format: string): string;
}
/** `'Screenshot 2026-09-07 14-32-05.png'`: sortable, and readable on a file card. */
export declare function pastedImageName(contentType: string, at?: Date, index?: number): string;
/**
 * The pictures on the clipboard, named — `[]` when there is nothing to attach.
 *
 * **Text wins.** A copy from a spreadsheet or a document puts a rendered
 * picture of the selection beside the text; attaching the picture instead of
 * pasting the text is wrong every time. So a clipboard holding text is left to
 * the editor, and a screenshot, which holds none, lands here. Pictures only:
 * any other file comes through the app's own file picker.
 */
export declare function pastedImages(source: ClipboardSource | null | undefined, at?: Date): File[];
export interface PastedImagesOptions {
    /**
     * The pictures a paste carried, named. Return `true` when the app took them
     * (an upload started), `false` to let the editor paste as it would have —
     * for a box that cannot upload right now.
     */
    onImages: (files: File[]) => boolean;
}
/**
 * Pasting a picture attaches it: a screenshot pasted into the editor reaches
 * the app as named files, the way the app's own file picker would hand them.
 * Text on the clipboard wins (see {@link pastedImages}).
 */
export declare const PastedImages: Extension<PastedImagesOptions, any>;
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